First identify whether the error concerns dependencies, signing, deployment targets, or Xcode setup. These require different fixes.
Use the Mac’s intended Xcode installation, complete its first-run setup, and inspect flutter doctor -v. Open ios/Runner.xcworkspace for the application workflow. Confirm that the Flutter SDK and native dependencies match the release you are building.
Only run CocoaPods commands if your configured project uses CocoaPods and has a valid Podfile. The inspected checkout does not contain an ios/Podfile; do not invent one or delete native project files just because a generic tutorial recommends pod install.
For a CocoaPods-enabled release, restore Dart dependencies first, run pod install from ios, and inspect the specific dependency conflict. Preserve lockfiles unless deliberately changing the dependency set.
Verify the development team, bundle identifier, provisioning, and enabled capabilities. Fix a signing error in Xcode rather than disabling push capability to make the build pass.
Check the native Firebase/plugin requirements against the Runner deployment target and any dependency-manager settings. Raise the target consistently when the selected dependencies require it; do not merely suppress the error.
Include the first native error, Xcode/Flutter versions, target device, and whether the failure occurs in a simulator or archive build when contacting support.